Pith Number

pith:MORB7EHA

pith:2014:MORB7EHAI5DAWOGC7CQGVXKURQ

not attested not anchored not stored refs pending

Generalized curvature-matter couplings in modified gravity

Francisco S. N. Lobo, Tiberiu Harko

arxiv:1407.2013 v2 · 2014-07-08 · gr-qc · astro-ph.CO · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MORB7EHAI5DAWOGC7CQGVXKURQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:46:24.125940Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63a21f90e047460b38c2f8a06add548c0e49f27d043f11abd7a9763c7eeff565

Aliases

arxiv: 1407.2013 · arxiv_version: 1407.2013v2 · doi: 10.48550/arxiv.1407.2013 · pith_short_12: MORB7EHAI5DA · pith_short_16: MORB7EHAI5DAWOGC · pith_short_8: MORB7EHA

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/MORB7EHAI5DAWOGC7CQGVXKURQ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 63a21f90e047460b38c2f8a06add548c0e49f27d043f11abd7a9763c7eeff565

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a457f44d7e74956a05a2a4deac04fa502ff545866b455efd932e5f14a81e658",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-07-08T09:40:01Z",
    "title_canon_sha256": "01bb05c1f1b10c14c4f7e7c1d7126ac861f6dae93525bdc05598047be0bc79fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.2013",
    "kind": "arxiv",
    "version": 2
  }
}